Roller side bearing for cars.



PATENTED MAR. 24, 1903.

- E. W. SUMMERS.

ROLLER SIDE BEARING FOR CARS.

APPLICATION PILBD JULY 31, 1902.

.170 MODEL.

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EDGAR W. SUMMERS, OF YOUNGSTOWN, OHIO.

ROLLER SIDE BEARING FOR CARS.

SPECIFICATION forming part of Letters Patent No. 723,756, dated March 24, 1903.

Application filed July 31,1902.

T0 at whom it may concern:

Be it known that I, EDGAR W. SUMMERS, of Youngstown, Mahoning county, Ohio, have invented a new and useful Roller Side Bearing for Cars, of which the following is afull, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a side elevation showing my improved roller-bearing in position upon the side member of the truck-frame. Fig. 2 is a top plan view of the same, and Fig. 3 is a vertical cross-section.

My invention relates to the roller side bearings employed upon railway-trucks, and is designed to provide a simple and effective construction therefor which can be cheaply and easily made and set in position.

In the drawings, 2 represents the rollers, of which any desired number may be used, these rollers being preferably straight cylinders of equal diameter throughout, so that they may be easily and cheaply cut from coldrolled shafting or similar material. The end trunnions of these rollers are carried in bearings in a roller-frame, which is preferably formed in one piece of sheet metal. 3 3 are the side members of this frame, which are provided with lower inwardly projecting flanges 4, embracing the top flanges 5 of the T-shaped roller-bed 6. The frame is provided-with end connecting plates or bars 7, and is preferably formed by cutting a recess of I shape in a plate of suitable size, then.v bending the sides downwardly and inwardly to form the flanges -f and bending the cen-' tral portions outwardly and upwardly into vertical positions to form the bearings for the roller-trunnions. The frame acts merely as a guide and holder for the rollers, the carbody load being carried upon the roller-bed. The Vertical web '8 of the T-shaped bed is curved upon its lower edge and is preferably carried upon a curved support or saddle to allow the roller-frame to slide and rock endwise. I have shown this support as formed upon the upper edges of two central webplates 9 9 at the center of the side member of the truck-frame, these web members being riveted to the flanged shapes 1O 10, forming Serial No. 117,746. (No model.)

the top compression members of the side frame ofthe truck. These compression members form the side guide for the web of the roller-bed, and the space between them is of greater width than the thickness of this web to allow side rocking of the roller-bearing and enable it to accommodate itself to inaccuracies of construction. I have shown the curved saddle for the rocker in order to increase the bearing-surface; but the rocker may rest upon a support which does not conform in shape thereto within the scope of my broader claims. The endwise movement of the bearings on the roller-bed is limited by cap-screws 11, which extend through elongated longitudinal slots in the flanges eof the lower frame and are secured in flanges of the bed.

. r The advantages of my invention result from the simplicity and cheapness of the device and its capacity for accommodating itself to the movements of the carbolster and truck. The end wise sliding and rocking allow it to conform to these movements without the necessity for making an arc-shaped roller-bearing, which is troublesome and expensive to make. The roller-bed is held in position and at the same time allowed side rocking to accommodate itself and allow a a continuous bearing of the rollers throughout their length.

It will be understood that while I have shown my side bearings as located over the longitudinal center plane of the side member of the truck frame the bearing may be placed in any desired position upon the truck, as in other roller side bearings. The construction and arrangement of the parts may also'be varied widely within the scope of my invention.

I claim-- 1. A car-truck having a roller side bearing comprising a plurality of rollers mounted on a sliding rocker, a bed, upon which the rocker is arranged to rock endwise, and a rigid support for said bed; substantially as described.

2. A car-truck having a roller side bearing provided with a rigid support arranged to allow universal movement of the bearing; substantially as described.

3. A roller side bearing for cars having a rocker arranged to rock endwise, a rigid support therefor, and a roller-frame having a series of rollers supported on the rocker; substantially as described. I

4. A car-truck having a concave bearingseat therein, and a roller side bearing provided with a plurality of rollers mounted on a rockerarranged to rock endwise,said rocker having a convex lower bearing-face resting upon the concave seat of the truck; substantially as described.

5. A car-truck having a rollerside bearing mounted upon a rocker-bed arranged to rock endwise, said bed having a convex lower face resting upon a concave lower bearing-surface, and side guides therefor; substantially as described.

6. A-car-truck having a roller side bearing mounted upon a sliding rocker, and side guides for the rocker arranged to allow side movement thereof; substantially as described.

7. A car-truck having a roller side bearing with a roller-frame having an I-shaped slot with the side portions bent to form bearings, and guides for the rollers; substantially as described.

8. A car-truck having a roller side bearing with a T-shaped bed, and a roller-frame having flanges fitting on the under faces of the bed-flanges; substantially as described.

9. A roller side bearing havinga roller-bed consisting of a sliding convex rocker, and a concave-curved saddle or seat therefor; substantially as described.

10. A rollerside bearing having a T-shaped bed, a roller-frame with flanges fitting under the flanges of the bed, and stops extending through slots. in the frame into the flanges of the roller-bed; substantially as described.

11. A roller side bearing having a roller bed consisting of a T-shaped rocker resting upon a curved saddle, and having side guides arranged to allow side rocking thereof, and a roller-frame containing cylindrical parallel rollers movable along the bed; substantially as described.

12. A car-truck having a roller side bearing comprising a roller-frame, having a plurality of rollers trunnioned therein, a rocker-bed upon which the rollers rest and a rigid support for said rocker-bed; substantiallyas described.

In testimony whereof I have hereunto set my hand.

EDGAR W. SUMMERS.

WVitnesses:

THos. H. JENKINS, GRACE B. SUMMERS. 

